package xiaojun.JAVA.service.array;

import xiaojun.JAVA.domain.dto.BaseDto;
import xiaojun.JAVA.domain.emtity.BaseEntity;
import xiaojun.JAVA.domain.vo.BaseVo;
import xiaojun.JAVA.domain.vo.Result;
import xiaojun.JAVA.service.IBaseService;

import java.util.Arrays;

/**
 * 业务层-基类
 *
 * @author 赖晓君
 * @since 2025/6/15  17:04
 */
abstract class BaseService<Entity extends BaseEntity,
        Dto extends BaseDto,Vo extends BaseVo> implements IBaseService<Entity,Dto> {

    static final int DATA_SIZE = 100;

    Entity[] data;

    Vo[] temp;

    private int idCounter = 1;

    @Override
    public boolean existsById(int id) {
        return id>=1&& id<idCounter&& data[id ]!=null;
    }

    @Override
    public Entity findById(int id) {
        if(existsById(id)) {
            return data[id];
        }
        return null;
    }

     abstract Vo convertToVo(Entity entity);

    @Override
    public Result list() {
        int length = 0;
        for(int i=1;i<idCounter;i++){
            if(data[i]!=null){
                temp[length++] = convertToVo(data[i]);
            }
        }
        return Result.success("查询成功", Arrays.copyOf(temp,length));
    }

    abstract Entity createEntity(Dto dto, int id);

    @Override
    public Result create(Dto dto) {
        if(idCounter>DATA_SIZE){
            return Result.failure("创建失败，超出了存储容量");
        }
        Entity entity = createEntity(dto,idCounter++);
        data[entity.getId()] = entity;
        return Result.success("创建成功", null);
    }

    abstract void updateEntity(Dto dto, Entity entity);

    @Override
    public Result updates(Dto dto, int id) {
        if(!existsById(id)){
            return Result.failure("更新失败，不存在该数据");
        }
        Entity entity = data[id];
        updateEntity(dto,entity);
        return Result.success("更新成功",null);
    }
}
